Overview
The Yocan UNI Pro 2.0 represents the evolution of one of the most popular universal 510 battery mods on the market. Building on the success of the original UNI Pro, this second-generation device refines the formula with an improved OLED display, enhanced voltage control, and USB-C charging. Designed for use with virtually any 510-threaded cartridge, the UNI Pro 2.0 combines versatility with precision in a compact, pocket-friendly package.
Yocan has established itself as a leader in the vaporizer market by focusing on user-friendly designs and practical features. The UNI Pro 2.0 continues this tradition, offering a box mod that appeals to both newcomers looking for their first quality battery and experienced users who demand precise control over their vaping experience.
Design & Build Quality
The UNI Pro 2.0 maintains the distinctive box mod form factor that made its predecessor popular, but with subtle refinements throughout. The device measures approximately 69mm x 44mm x 22mm, making it genuinely pocket-friendly while still providing comfortable ergonomics during use.
Materials and Construction
The outer shell is constructed from durable ABS plastic with a smooth matte finish that resists fingerprints and provides a secure grip. While metal construction would feel more premium, the plastic body keeps the weight down and makes the device comfortable for extended pocket carry. The build quality is solid with no creaking or flex in the housing.
Display and Controls
The centerpiece of the UNI Pro 2.0 is its bright OLED display panel. The screen clearly shows:
- Current voltage setting (2.0V - 4.2V)
- Puff counter for session tracking
- Battery level indicator
- Cartridge resistance (on some models)
The single button interface keeps operation simple. Located on the front face, the button provides tactile feedback and is positioned for natural thumb access. The button doubles as the firing mechanism and menu navigation control.
Cartridge Compartment
Perhaps the most innovative design element is the adjustable cartridge compartment. The top-mounted dial adjusts the width to accommodate cartridges of various diameters, from slim disposable-style carts to wider ceramic cartridges. The magnetic 510 adapter can be raised or lowered to accommodate different cartridge heights, ensuring the cartridge sits securely regardless of its dimensions.
A small viewing window allows you to monitor oil levels without removing the cartridge, though visibility depends on the cartridge's own transparency.
Available Colors
The UNI Pro 2.0 is available in a range of color options to suit personal preferences, typically including Black, Silver, Red, Blue, and various limited edition finishes. Color availability may vary by retailer.
Features
Precision Voltage Control
The standout feature of the UNI Pro 2.0 is its precise voltage adjustment system. Unlike many 510 batteries that offer only three or four preset voltages, the UNI Pro 2.0 allows adjustment from 2.0V to 4.2V in 0.1V increments. This granular control lets you dial in the exact voltage for optimal performance with any cartridge.
Lower voltages (2.0V - 2.8V) preserve terpenes and deliver smoother, more flavorful hits. Mid-range settings (2.8V - 3.4V) provide balanced vapor production and flavor. Higher voltages (3.4V - 4.2V) maximize cloud production and intensity, though at the expense of some flavor nuance.
OLED Display
The crisp OLED screen provides at-a-glance information without the need to cycle through modes or interpret LED colors. The display automatically activates when you press the button and shows all relevant information simultaneously. This transparency is particularly valuable for new users who might otherwise struggle to remember which LED color corresponds to which voltage level.
Preheat Function
For thick oils or cold weather use, the 10-second preheat function gently warms the cartridge at a lower power level. This helps thin viscous oils without burning and ensures consistent vapor production from the first draw. Activating preheat is as simple as double-clicking the power button.
Universal Cartridge Compatibility
The adjustable width and height mechanism accommodates virtually any 510-threaded cartridge on the market. Whether you're using a slim half-gram cartridge or a wide full-gram ceramic cart, the UNI Pro 2.0 can secure it properly. The magnetic connection ensures quick cartridge changes while maintaining reliable electrical contact.
Session Tracking
The built-in puff counter tracks your usage throughout the day. This feature helps users monitor consumption and can be reset as needed. The counter displays directly on the OLED screen alongside voltage and battery information.
Performance
Vapor Production
The UNI Pro 2.0 delivers consistent, reliable performance across its entire voltage range. The wide voltage spectrum means you can optimize settings for any cartridge type:
- Ceramic cartridges typically perform best between 2.4V and 3.2V
- Wick-based cartridges often require slightly higher voltages (3.0V - 3.6V)
- High-viscosity oils may need 3.4V or above for proper vaporization
The power delivery is stable, with no noticeable voltage drop as the battery depletes. This consistency ensures the same experience from a full charge down to the low battery warning.
Battery Life
The 650mAh internal battery provides reasonable longevity for a device of this size. In typical use:
- Light users (10-20 puffs daily): 2-3 days per charge
- Moderate users (30-50 puffs daily): 1-2 days per charge
- Heavy users (50+ puffs daily): Daily charging recommended
Charging via USB-C is notably faster than micro-USB predecessors, typically reaching full charge in 60-90 minutes. The device cannot be used while charging (no pass-through), so plan charging during downtime.
Real-World Usage
In day-to-day use, the UNI Pro 2.0 excels in its intended role as a universal cartridge battery. The ability to fine-tune voltage means you can maximize flavor from terp-rich cartridges or push cloud production when desired. The compact form factor disappears in a pocket, and the discreet appearance draws minimal attention.
The adjustable cartridge holder genuinely works as advertised. I tested cartridges ranging from 9mm to 12mm diameter and various heights, all secured firmly with the adjustment mechanism. The viewing window is helpful, though dark-colored cartridges or opaque housings obviously limit its usefulness.
Pros & Cons
Strengths:
The precision voltage control sets the UNI Pro 2.0 apart from simpler 510 batteries. Being able to adjust in 0.1V increments allows for optimization that preset voltage devices simply cannot match. The OLED display eliminates guesswork and provides immediate feedback. Universal cartridge compatibility means one battery works with your entire cartridge collection.
Weaknesses:
The 650mAh battery, while adequate for most users, may feel limiting for heavy consumers. The plastic construction, while durable, doesn't convey the premium feel of metal alternatives. The lack of pass-through charging means you cannot use the device while it charges.
Verdict
The Yocan UNI Pro 2.0 successfully builds on its predecessor's strengths while addressing user feedback. The precision voltage control, clear OLED display, and universal cartridge compatibility make it one of the most versatile 510 box mods available at any price point.
For users who want more control than basic button-cell batteries offer but don't need the complexity of advanced mods, the UNI Pro 2.0 hits a sweet spot. It's particularly well-suited for those who use multiple cartridge types and want to optimize settings for each. The affordable price point makes it accessible to beginners, while the feature set satisfies experienced users.
If you're looking for a reliable, feature-rich 510 battery that can handle any cartridge you throw at it, the Yocan UNI Pro 2.0 deserves serious consideration. It represents the current standard for what a universal cartridge battery should offer.
Related: Yocan UNI Pro 2.0 Manual